Lock-nut.



PATENTED JUNE 11, 1907.

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G. RYSTROM. LOCK NUT.

.urLmATIoN FILED mums. 1905.

No.l 856,728.

UNITED STATES Y PATENT OFFICE.

LOCK-NUT.

Specification of Letters Patent.

Patented June 11, 1907.

Application filed December 18,1905. Serial No. 292,233.

Be it known that I, CHARLES RYsTROM, a citizen ofthe United States, residing at Rockford, in the county of l/Vinnebago and State of Illinois, have invented certain new and useful Improvements in Loek-Nuts, of which the following is a specification.

The obj ect of this invention is to construct a lock nut having its threaded opening inclining laterally to its lengthwise direction when separated from the bolt, and when placed in connection with the bolt its threaded opening will be formed to conform to the bolt, thereby causing an impinging effect upon the bolt, sufficient to hold it 'from accidental displacement.

The further object of this invention is to construct a lock nut of a series of coils provided with a central screw-threaded opening and having' the face of one coil seated into the adjacent face of the nut coil, in order that when a wrench is applied to the nut, the coils will be held from separating or twisting past one another.

In the accompanying drawings, Figure l is a plan view of my improved lock nut. Fig. 2 is an elevation. Fig. 3 is a vertical central section. F ig. 4 is an elevation of the nut applied to a bolt. Fig. 5 is a vertical section of the nut in its connection with a bolt. F ig. 6 is an elevation of the nut showing` the connected coils.

The lock nut is composed of a single strip or bar of material fashioned into a series of inter-engaging coils, as l, 2, 3 and 4 having preferably hexagonal exterior contour, pro vided with a central screw-threaded opening 5 to receive a bolt or the like. After the formation of this screw-threaded opening 5 the successive coils of which the nut is composed i are displaced laterally, progressively, that is to say, for example, the coil 3 is shifted laterally with respect to the coil 4; the coil 2 laterally with respect to coil 3, and the coil 1 'laterally with respect to coil 2, as clearly shown in Fig. 3, whereby the scre\\'tl1readed opening of the nut runs obliquely to the line of the bolt or other device to which the nut is to be applied.

In placing the nut in connection with a bolt 6 it is turned on in the usual manner which will cause the coils to assumo the position they occupy before being shifted laterally, and as the coils are of spring material, they will impinge against the bolt and hold the nut against accidental displacement.

In the manufacture of the nuts the meeting faces of one coil are embedded into seats in the meeting 'face of the adjacent coil as shown at 7 Figs. 2 and 4 so that in turning the nut in connection with the bolt, one coil will exert its influence on the coil next to it, thereby forming practically a solid nut.

I claim as my invention-- l. A lock nut consisting of a bar of material fashioned into a series of screw-threaded coils shifted progressively laterally to provide an oblique screw-threaded opening.

2. A lock nut consisting of a bar of material fashioned into a series of screw-threaded coils shifted progressively laterally to provide an oblique screw-tlneaded opening, and the meeting faces of the several coils being embedded in seats in the faces of the adjacent coil.

CHARLES RYSTROM.

lVitnesses:

A. O. BEHEL, E. BEHEL. 

